code: def validate_environment(api_key):
      headers = {
          "accept": "application/json",
          "content-type": "application/json",
      }
      if api_key:
          headers["Authorization"] = f"Bearer {api_key}"
      return headers
  
file_path: litellm/litellm/llms/aleph_alpha.py
imports: import os, types
  import json
  from enum import Enum
  import requests
  import time
  from typing import Callable, Optional
  import litellm
  from litellm.utils import ModelResponse, Choices, Message, Usage
  import httpx
label_desc: Use image node_id 1 for calling a global function with example usage: validate_environment(api_key) and returns: headers